How do I be okay with his baby mama? He says she is nothing but someone that he has a kid with. Everytime I think he has a daughter i'm constantly reminded what they had. He has a oldest daughter and she is turning 18 and the 18 year old, the youngest baby mama, the youngest daughter and the grandma are all going out and I feel some type of way. I've never met the youngest one. I've been dating him for 3 years. Everytime I tell him about how I feel about the youngest baby mama, he says I never have to deal with her so he will never understand what my problem is. What do I do you guys?